RESPUESTA PRODUCTIVA, DIGESTIBILIDAD DE LOS NUTRIENTES Y PARAMETROS DE FERMENTACION RUMINAL EN OVINOS, RECIBIENDO CLORHIDRATO DE ZILPATEROL

Se evaluó el efecto de Clorhidrato de Zilpaterol, sobre la digestibilidad de los nutrientes en dietas típicas de ovinos finalizados en corral.Seis ovinos de lana (Suffolk x Hampshire) con un peso vivo inicial de 30.6 kg ± 2.6 kg fueron distribuidos en doble cuadro latino 3 x 3 para evaluar el efecto de tres niveles del beta adrenérgico agonista Clorhidrato del Zilpaterol (0, 10 y 20 mg de clorhidrato de zilpaterol/ovino/día) sobre la respuesta productiva, características de la fermentación ruminal y digestibilidad de los nutrientes de una dieta típica para la finalización de ovinos en corral. Cada periodo experimental tuvo una duración de 15 días con 10 de ellos de adaptación a la dieta y 5 para la colección de muestras. Toda la información colectada se analizó mediante análisis de varianza utilizando el procedimiento GLM de paquete estadístico SAS y la diferencia entre medias por la prueba de Tukey. El clorhidrato de zilpaterol no tuvo efecto (P > 0.05) sobre el consumo de materia seca, ganancia diaria de peso o eficiencia alimenticia. Respecto a las variables de fermentación ruminal (pH, concentración de metano, ácido acético, ácido propiónico, ácido butírico y relación acético/propiónico) no se observó efecto (P > 0.05) de tratamientos; la misma respuesta (P > 0.05) se cuantificó para la digestibilidad de los nutrientes (materia seca, materia orgánica, proteína cruda, extracto etéreo, fibra detergente neutro y fibra detergente ácida). Bajo las condiciones que se desarrolló el experimento, el clorhidrato de zilpaterol no modificó las variables productivas, características de fermentación ruminal y digestibilidad de los nutrientes de la dieta evaluada. Se recomienda realizar otra evaluación, donde las unidades experimentales se muestrean al final del periodo recomendado en el uso del clorhidrato de zilpaterol (día 28 al 32 del periodo de dosificación), en virtud de que la rotación de tratamientos en el cuadro latino en la presente investigación pudo haber enmascarado el efecto de los tratamientos sobre las variables respuesta evaluadas.Proyecto Red PROMEP de Cuerpos Académicos “Evaluación productiva y económica del crecimiento y calidad de la carne de ovinos de pelo mediante el uso de un promotor de crecimiento y diferentes niveles de energía en la dieta

Effects of methamphetamine on locomotor activity and thalamic gene expression in leptin-deficient obese mice

Leptin is an adipose-derived hormone that regulates energy balance. Leptin receptors are expressed in extrahypothalamic sites and several reports showed that leptin can influence feeding and locomotor behavior via direct actions on dopaminergic neurons. The leptin deficient mouse (ob/ob) has been used as an animal model of blunted leptin action, and presents with obesity and mild type 2 diabetes. We used ob/ob mice to study the effect of repeated 7-day methamphetamine (METH) administration analyzing locomotion, behavioral sensitization, and somatosensory thalamic mRNA expression of voltage-gated calcium channels and glutamatergic receptors using RT-PCR. We observed reduced METH-mediated responses in ob/ob mice associated with enhanced in mRNA expression of key voltage-gated and glutamate receptors in the somatosensory thalamus. Results described here are important for understanding the control of locomotion and thalamocortical excitability by leptin.Fil: Gonzalez, Betina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Farmacológicas. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones Farmacológicas; ArgentinaFil: Gonzalez, Candela Rocio. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; ArgentinaFil: Bisagno, Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Farmacológicas. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Investigaciones Farmacológicas; ArgentinaFil: Urbano Suarez, Francisco Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Fisiología, Biología Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias; Argentin

Engaging Your Students by Engaging with Your Librarians:​ Accessing and Preserving ​ Audio Primary Materials ​ for Academic Work

This section presents FIU library initiatives to promote and supports long-term preservation and academic access to primary materials in the humanities. The Diaz Ayala Collection (DAC) provides access to faculty and students to one of the most relevant collections of Cuban and Latin American music in the United States. The DAC librarian will explain the application of technologies to preserve, access, and disseminate audiovisual content. Additionally, she will elaborate further on national and international academic partnerships, grant participation, classwork collaboration, and travel grant opportunities supported by the FIU Libraries, LACC, and CRI

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Erosion rates in subtropical, rapidly developing countries: an isotopic approach to measuring background rates of erosion in Brazil and China

Erosion, a surface process, can be quantified over long-term (assumed to be the natural erosion rate of the landscape) and contemporary (modern) timeframes. My research used the rare cosmogenic isotope 10Be in sand and cobbles collected from rivers in southeastern Brazil (Santa Catarina and Rio de Janeiro states) and southwestern China (Yunnan province) to quantify long-term, background rates of erosion and sediment supply. These measurements will also increase number of such measurements in tropical and subtropical climates. I assessed the relationship between landscape parameters (topographic and climatic) and background erosion rates in order to understand factors related to erosion. My data from so far unsampled states in Brazil shows that background erosion rates range between 13 and 90 m/Myr. I found that mean basin slope (R2=0.73) and mean annual precipitation (R2=0.57) are strongly correlated to erosion rates. Steep, escarpment-draining basins in Brazil erode faster than lower gradient basins draining the highlands. Comparing the isotopic concentration of river sand and cobbles, my data show that these grain sizes are sourced from different parts of the landscape. I compiled all published Brazilian cosmogenic 10Be data, and compared them to erosion rates from similar tectonic settings. While the erosion rates in Brazil are relatively low, they are similar to those in southeastern North America, but faster than rates measured on escarpments in southern Africa. In China, I tested the human effects on denudation by comparing long-term erosion rates derived from in-situ 10Be concentration and the modern sediment yield of 22 watersheds in Yunnan. Background erosion rates range between 17 and 386 m/Myr; long term sediment yields based on these erosion rates range from 79 to 893 tons km-2 yr-1. Modern sediment yields range from 90 to 2,879 tons km-2 yr-1 (data from Schmidt et al., 2011). In most watersheds, the modern sediment yield is 2-3X higher than long-term rates, likely the effect of a long history of land use in Yunnan. I found a statistically significant, positive relationship between erosion rates and both area (R2 = 0.60) and mean basin slope (R2 = 0.42). There is a negative but strong relationship between erosion rates and precipitation in my dataset (R2 = 0.60). I sampled some places where 10Be samples had been collected before to test the methodological assumption of time-invariant 10Be concentration. Concentrations generally agree on samples taken 6 months apart and in samples from the active channel and from floodplains, but not in samples collected a decade and centuries apart

MHEALTH CHILDHOOD OBESITY PREVENTION: A LOOK INTO THE HISPANIC MOTHER’S PERSPECTIVE

Along with increasing physical activity, improving nutrition is an important behavior to target to reduce the risk of obesity in children and adolescents. To date, a nutrition-focused mHealth intervention used to promote obesity prevention and healthy living among Hispanic children and adolescents has not been specifically developed for Hispanic mothers. The purpose of this study was to provide information on feasibility and acceptability of a mHealth child nutrition intervention among Hispanic mothers. The data was collected from an online survey and telephone interviews from 30 mothers of 8-12-year-old Hispanic girls. Most mothers were 40 years old or younger (70%), identified race as white (76.7%), and married (86.7%). Ninety three percent of mothers had post-high school education, and most had more than one child under 21 years of age living in their home (86.7%). There was no statistically significant association between Hispanic mothers’ beliefs about their child’s daily fruit and vegetable servings and parent-reported child daily consumption of fruit and vegetables. There was no statistically significant association between mothers’ actions for providing frequency of fruits and vegetables via meals or snacks with the parent-reported child daily consumption of fruit and vegetables. Hispanic mothers’ attitudes of the importance to eat healthy foods and their attitude to encourage healthy eating were not able to be assessed because everyone felt these were both important. The relationship between Hispanic mothers’ perception of control in what their child eats and their attitude to encourage healthy eating was not able to be assessed because all mothers felt it was very important for parents to encourage healthy eating in children. These findings indicate the feasibility of this methodology because parents who participated in this study have access to the needed technology, are familiar with texting, and that texting would be an acceptable child obesity prevention method. Although the study population did not provide the ability to address all the study questions, the results indicate Hispanics are viable research participants to use mHealth and support healthy eating strategies. Texting may be part of the solution for providing health promotion messages relevant for Hispanics

Representing Minority Groups and Their Heritage through Access and Preservation of Unique Audio Recordings... A Grant Overview

: In 2021, the FIU Libraries received a Recordings at Risks grant from the Council on Library and Information Resources (CLIR ). The funds allowed digitize, create metadata, and provide online access to thousands of unique Caribbean and Latin American songs produced from 1900 to 1935 included in The Diaz-Ayala Collection Cassette Series. This presentation will provide an overview of the most significant aspects of the project, including strategies and challenges of material selection, description, rights and team coordination & collaboration. We will also provide a tour through the FIU digital repository dPanther with examples

Representing Minority Groups and their Heritage across Access and Preservation of Unique Audio Recordings A Grant Overview

In 2021, the Florida International University (FIU) Libraries received the Recordings at Risks (R&R) grant from the Council on Library and Information Resources (CLIR). The funds allowed us to digitize, create metadata, and provide online access to hundreds of unique Caribbean and Latin American songs produced between 1900 and 1935 that are included in the Diaz Ayala Cuban and Latin American Popular Music Collection (DAC) Cassette Series. The digitized materials comprise more than 1,000 cassettes with approximately 1,200 songs, recorded originally in 78rpms by Columbia, Victor, and other historical record companies. The music represents a variety of genres and is a clear example of the life and conditions of minority groups in the region. The digitization of this collection has been essential to guarantee availability and long-term preservation. To provide more comprehensive access to these audio files, the FIU Libraries is contributing to the Discography of American Historical Recording (DAHR) at the University of California Santa Barbara (UCSB), and the metadata will be added to the Digital Public Library of America (DPLA). This article provides an overview of the most significant aspects of the R&R grant “Representing Minority Groups and Their Cultural Heritage through Access and Preservation of Unique Caribbean Musical Recordings, 1900-1935.” It discusses challenges and strategies for success, insights on material selection, copyright, and metadata initiatives